#include <bits/stdc++.h>
using namespace std;

struct iofast_t {
    iofast_t() {
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
    }
} iofast;

struct uns_t {} uns;
template <typename Element, typename Head, typename ...Args>
auto vec(Element init, Head arg, Args ...args) {
    if constexpr (sizeof...(Args) == 0) return std::vector(arg, init);
    else return std::vector(arg, vec(init, args...));
}
template <typename Element, typename Head, typename ...Args>
auto vec(uns_t, Head arg, Args ...args) {
    return vec(Element(), arg, args...);
}

template <typename T, typename Compare = less<T>>
T &chmin(T &l, T r, Compare &&f = less<T>()) { return l = min(l, r, f); }
template <typename T, typename Compare = less<T>>
T &chmax(T &l, T r, Compare &&f = less<T>()) { return l = max(l, r, f); }

int main() {
    string s; cin >> s;

    auto is_prime = [](int64_t x) {
        for (int i = 2; i <= x / i; ++i) {
            if (x % i == 0) {
                return false;
            }
        }
        return 1 < x;
    };

    int ans = 0;
    for (int i = 0; i < (1 << (size(s) - 1)); ++i) {
        int64_t sum = 0, sub = 0;
        for (int j = 0; j < size(s); ++j) {
            sub *= 10;
            sub += s[j] - '0';
            if (i & (1 << j)) {
                sum += sub;
                sub = 0;
            }
        }
        sum += sub;

        ans += is_prime(sum);
    }

    cout << ans << endl;
}